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Hanatek Advanced Friction Tester (AFT)
Hanatek Advanced Friction Tester (AFT)
Hanatek Advanced Friction Tester (AFT)
Hanatek Advanced Friction Tester (AFT)
Hanatek Advanced Friction Tester (AFT)
Hanatek Advanced Friction Tester (AFT)
Hanatek Advanced Friction Tester (AFT)
Industries & Applications
  • Packaging
  • Paper
  • Plastics
  • Textile

Hanatek Advanced Friction Tester (AFT)

  • Static and dynamic coefficient of friction
  • ‘Compliant to ASTM D1894 and ISO 8295
  • Unique sled placement system for repeatible testing
  • Friction measurement theory

£9,365

All GBP prices are exclusive of UK VAT (where applicable)

Prices exclude local duties – Purchase through your local agent

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Who measures slip/friction?

Friction testing is used in the packaging industry to measure the slip resistance of a product, with the aim of predicting feeding and running speed on an automatic gluing, erecting, filling or packaging line.

Friction parameters help the manufacturer understand how the finish of the blown film or printed carton can influence the feeding and running speed. Surface slip is a key factor when printing, erecting or filling packaging materials on an automatic line.

What is slip/friction?

A product’s slip resistance is characterised by it’s coefficients of friction:

Static COF = Fs/N Dynamic COF = Fd/N

Where Fs is the maximum static frictional force and the Fd is the average dynamic frictional force.

N is the Normal force, i.e. the force of gravity acting on the sample and test sled.

In practical terms, the static slip relates to the force required to get two resting surfaces moving, dynamic slip is the smaller force that is required to keep the surfaces moving once this initial “inertia” is overcome. These values are expressed as ratios and do not have units, they are usually quoted as a decimal value between 0 and 1.

  • Product consistency
  • Packaging speed
  • Improving manufacturing process • Optimising machinery settings
  • Direct costs: Raw materials, especially speciality polymers
  • Indirect costs: Rework/ Recycling/ Replacement cost/ Spoiled package content

How is coefficient of friction measured?

All methods of COF measurement involve preparing
a sample into two flat pieces, the samples are placed together and a weight is applied. One of the samples is held in a fixed position, a force is applied to the other sample until they begin to slip against one another.

Horizontal Plane (Flat Bed) Friction Testing

To measure Static and Dynamic coefficients of friction it is necessary to use a fixed bed instrument. These instruments use a motor to pull a sled across the sample, using a load cell to measure the forces.

Original slip testing instruments were converted tensile testers that used a cord to pull the sample.
The use of a cord has now been removed from most friction measurement standards due to the uncertainty added by its own elasticity and problems with sample positioning.

How can Coefficient of Friction Values Relate to Packaging Speeds?

COF can often be related to the feeding and running attributes of products, for instance UV varnished food cartons have a slip coefficient that is related to the formulation of the UV coating its cure and film weight.

Cartons that have a very low static coefficient of friction may have handling difficulties as they will tend to slide apart and are difficult to place into feeding hoppers.

In contrast, products which have a high COF will tend to stick together and can be prone to misfeeding due to multiple cartons entering the packaging line at once.

Different packaging lines will often require products with specific surface frictional profiles to achieve their highest running and feeding speeds, it is only by measuring and specifying these values that a manufacturer can achieve maximum productivity.

What Parameters Affect Coefficient of Friction Values?

COF is primarily influenced by the chemical composition of the surface and its surface profile, in packaging this is often a coating applied
to the packaging.

Other important factors that affect COF are test speed, the normal force (mass of the sled), contact area and geometry of the sample, these values are often specified in the test method (ASTM D1894 and ISO 8295).

Friction parameters help the manufacturer understand how the finish of a blown film or printed carton can influence the feeding and running speed.

Test types

Friction Test

Static and dynamic coefficient of friction measurement.

  • Automatic sled placement with variable dwell times give more repeatable static slip results
  • Uses mechanical linkages to apply the force

Peel Testing

Optional attachments transform the AFT into a precision peel test instrument, accurately measuring the force required to separate glued or laminated films, tapes, labels etc.

  • All tests are to FINAT international standards
  • T-Peel, 180° peel or 90° peel tests

Tear Testing – Substrate Strength

Optional tear strength attachment allows the user to measure and control tear strength to international standards.

  • Trouser tear method
  • Full graphical instructions and sample templates

Block Test

During storage, films, labels or cartons can inadvertently block together making them difficult to separate and feed into finishing or packing lines.

  • Measure the force required to separate blocked samples
  • Full testing and sample conditioning instructions
  • Test to international standards

block testing attachment for friction tester

Box Closing Force

Measure the forces required to close filled cartons. This test ensures that carton based packages can be stacked and displayed correctly. Cartons must also be properly closed to ensure that any secondary process such as film wrapping can be performed.

box closing force tester

Detachable Heated Bed

A detachable heated bed can be added to test frictional characteristics at elevated temperatures of up to 110°C.

heated bed attachment for friction tester

Improving Productivity

The detailed force curves identify any inconsistencies on the sample surface that may reduce packing or feeding performance in the production environment.

This powerful feature can highlight subtle differences in substrates or coatings that allow the user to fine tune their product for their production conditions giving optimum feeding, running and packing speeds.

Operation & Results

This flexible instrument can be configured for quality or research use. All operations and test methods have comprehensive graphical on-screen help. The COF produces detailed force graphs that can be saved and compared.

Pre-loaded ISO/ASTM/TAPPI Slip Test Methods

The instrument has pre-loaded test instructions that help ensure samples are tested to international standards.

Live Graphical Representation of Results

Results are given at the end of the test for static and dynamic COF.
All results can be compared graphically – a previously tested reference can also be overlaid to help understand batch to batch consistency and quality.

Test Results in PDF Format

Full graphical and statistical analysis of test results can be printed to PDF for easy reporting.

Create and Store Electronic References for Future Comparison

The instrument calculates detailed statistics for multiple measurements which can be saved. The graph of these measurements can be overlaid against future tests.

Applications

The Advanced Friction Tester (AFT) produces detailed fingerprints of new substrates, coatings and production samples. These characteristics can be saved and compared at any time allowing the manufacturer to specify the optimum surface finish for any packaging process.
Production
Print industry
Packaging industry

Features

The Hanatek Advanced Friction Tester (AFT) allows the user to measure and store the full force curve which graphically illustrates the frictional characteristics in addition to providing the static and dynamic COF values.

Intuitive and easy to use

No need to consult complicated manuals and easy training for new users

Static friction measuring

The initial force required to make two surfaces slip against each other

Dynamic friction measuring

The ongoing force required to maintain movement between two surfaces

Sled placement

Automatic sled placement with variable dwell times give more repeatable static slip results.

Fixed link between the sled and the load cell means that there are no errors in friction from pulley wheels or cords associated with other measuring instruments.

Sled is positioned on lift pins
Lift pins retract into the instrument and the sled is placed in the same position each time

Touch screen interface

The AFT uses an intuitive touch screen interface making it accessible and easy to use.

Development tool or Q.A. instrument

This flexible instrument can be configured for quality or research use.

Research Tool

Create bespoke test methods. Statistical and graphical analysis of results

Q.A. Instrument

Pre-loaded ISO/ASTM/TAPPI/FINAT test methods. Date/operator stamped results. User definable pass/ fail criteria with optional password protection.

Accessories

The Hanatek Advanced Friction Tester offers flexible testing to multiple standards and test types.

The package includes:

Touch screen PC with software and connection cables
Easy-load sled for films flexible substrates
OR
Board sled for more rigid materials

Optional Extras:

Simple sample preparation with the Hanatek Universal Sample Cutter (USC)

The Hanatek USC has been designed for the simple cutting of samples for the packaging industry. Dies can be configured to cut samples for most test types including: friction, tensile, grammage, O2 permeability, CO2 permeability, WVTR, rub resistance, carton crease, carton stiffness and many more.

Specifications

Weight 32 kg
StandardApplicationDetails
ISO 8295Plastics - film and sheetingDetermination of the coefficients of friction
ISO 15359Paper and boardDetermination of the static and kinetic coefficients of friction - horizontal plane method
ASTM D1894Plastics - film and sheetingStandard test method for static and kinetic coefficients of friction
TAPPI 549 Printing paperCoefficients of static and kinetic friction of uncoated writing and printing paper by use of the horizontal plane method
ASTM D2534Wax coatingStandard test method for coefficient of kinetic friction for wax coatings
ASTM D3330TapeStandard test method for peel adhesion of pressure sensitive tape
FTM1FINATPeel testTest method no. 1, Peel adhesion (180°) at 300mm per minute
FTM2FINATPeel testTest method no. 2, Peel adhesion (90°) at 300mm per minute
FTM3FINAT AdhesionTest method no. 3, Low speed release force
FTM21FINATAdhesionTest method no. 21, Ink Adhesion - basic
ISO 6383TextileDetermination of tear resistance -- Part 1: Trouser tear method
Instrument Information
Resolution0.1g / 0.001 COF
Accuracy0.5g
Sled200g (film) or 200g (board)
Other sled weights by request
Custom sled base materials available
Power110/240v 50/60Hz
Instrument Dimensions
Size180mm (H) x 550mm (W) x 300mm (D)
Net Weight7kg (Instrument), 4kg (PC)
Gross Weight21kg
Touch Screen PC Information
Operating systemWindows 10
Free extended warranty

Free extended 2 year warranty: Requires registration at www.rhopointinstruments.com/help-services/forms-feedback/instrument-registration/ within 28 days of purchase. Without registration, 1 year standard warranty applies.

Calibration and service

Fast and economic service via our global network of accredited calibration and service centres. Please visit www.rhopointinstruments.com/help-services/calibration-servicing/ for detailed information.

What’s in the box

Included accessories

  • 2 x USB data cables
  • 1 x Friction sled template
  • 4 x Sample securing magnets
  • 1 x Hanatek USB drive
  • 1 x Calibration pulley attachment with fixing attachments
  • 1 x 100g calibration check weight
  • UKAS traceable calibration certificate

Answers to common questions about our instruments and measurements

Why measure gloss?

Gloss is an aspect of the visual perception of objects that is as important as colour when considering the psychological impact of products on a

Read More »

What is RSpec?

RSpec is the peak reflectance measured over a very narrow angular band in the specular direction (+/-) 0.0991º. RSpec is very sensitive to any texture

Read More »

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Hanatek Advanced Friction Tester (AFT)

£9,365